Daily signature and virus definitions updates for your Quick Heal products, allowing the manual update of Quick Heal AntiVirus Pro, Internet Security and be able to detect certain threats or malicious files, which can lead to system infections. 24 Mar How to update Quick Heal AntiVirus Pro Offline. 1) Click this link 4) Right Click on that file and say extract to QH\. 5) Open Quick. 20 Feb Definition updates for Quick Heal Series (Version. ) Bring that zip file to machine where You need to update the quick heal.